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Viral-micro
| Question | Answer |
|---|---|
| HIV genome | Diploid |
| env gene | Gp160 glycosylated and cleaved within ER and Golgi in gp 120(attachment to host CD4+ T cell) and gp41(fusion and entry) |
| Gag gene | P24 --- capsid P17--- matrix proteins |
| Pol gene | Reverse transcriptase-- synthesizes dsDNA from RNA--dsDNA intregrates into host genome aspartate protease, integrease Mutations in this gene are responsible to resistant HAART tx. |
| CCR5 | Coreceptor --- on macrophages (Early infection) Homozygous CCR5 mutation--- immunity Heterozygous ". "------slower course |
| CXCR4 | On T cells--late infection |
| Four stages of untx infection | Flu like (acute) Feeling fine (latent) Falling count Final crisis |